WO2009154239A1 - Conducteur de fil électrique pour câblage, fil électrique pour câblage, et procédé de fabrication de conducteur de fil électrique pour câblage - Google Patents

Conducteur de fil électrique pour câblage, fil électrique pour câblage, et procédé de fabrication de conducteur de fil électrique pour câblage Download PDF

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Publication number
WO2009154239A1
WO2009154239A1 PCT/JP2009/061049 JP2009061049W WO2009154239A1 WO 2009154239 A1 WO2009154239 A1 WO 2009154239A1 JP 2009061049 W JP2009061049 W JP 2009061049W WO 2009154239 A1 WO2009154239 A1 WO 2009154239A1
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WO
WIPO (PCT)
Prior art keywords
mass
wiring
wire
copper alloy
conductor
Prior art date
Application number
PCT/JP2009/061049
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English (en)
Japanese (ja)
Inventor
功 高橋
Original Assignee
古河電気工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 古河電気工業株式会社 filed Critical 古河電気工業株式会社
Priority to JP2010517949A priority Critical patent/JPWO2009154239A1/ja
Publication of WO2009154239A1 publication Critical patent/WO2009154239A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H01B1/026—Alloys based on copper

Definitions

  • the present invention relates to a method of manufacturing a wire conductor for wiring, a wire for wiring, and a wire conductor for wiring for automobiles, robots, electric / electronic devices and the like.
  • an annealed copper wire as stipulated in JIS C 3102 or a stranded wire obtained by twisting a wire plated with tin is used as a conductor, and this conductor is made of vinyl chloride, crosslinked.
  • An electric wire in which an insulator such as polyethylene is coated concentrically has been used.
  • Crimp connection is a method of wrapping an electric wire with a plate material and connecting it by caulking.
  • As a method for confirming the connection state by pressure bonding there is a measurement of pressure bonding strength.
  • the crimped section has a conductor cross-sectional area that is 20-30% smaller by caulking (hereinafter, the ratio of the cross-sectional area decreased by caulking is referred to as “cross-sectional reduction rate”), and the absolute value of the conductor strength decreases. Therefore, the breakage occurs at the caulked portion.
  • the present invention has been made, and it is an object of the present invention to provide a wiring electric wire conductor excellent in terminal crimping strength and a method of manufacturing the wiring electric wire conductor.
  • the present inventors have used an aging precipitation type copper alloy having a specific composition, the ratio of 0.2% proof stress to tensile strength is 0.70 to 0.92, and the work hardening index is 0.04. It has been found that by using a copper alloy wire of 0.17 or less, it is possible to produce a wire conductor for wiring that is excellent in tensile strength, has a low absolute strength during crimping, and has high terminal crimping strength. Moreover, it discovered that the said wire conductor for wiring can be obtained with sufficient reproducibility by performing the aging heat processing performed at the last process before formation of an insulation coating layer on specific conditions. The present invention has been completed based on these findings.
  • a plurality of copper alloy wires containing 1.0 to 4.5% by mass of Ni, 0.2 to 1.1% by mass of Si, and the balance of Cu and inevitable impurities are twisted together.
  • a wire conductor for wiring comprising at least one selected from the group consisting of a plurality of copper alloy wires having a composition comprising Cu and inevitable impurities, the balance being 0.2% of the copper alloy wire
  • a wire conductor for wiring wherein the ratio of proof stress and tensile strength is 0.70 or more and 0.92 or less, and the work hardening index is 0.04 or more and 0.17 or less, (3)
  • the composition of the copper alloy wire further includes at least one selected from the group consisting of 0.01 to 0.5% by mass of Mn and 0.05 to 0.5% by mass of Mg.
  • a method of manufacturing a wire conductor for wiring comprising each step of performing aging annealing at 550 ° C. for 1 minute to 5 hours; and (8) It contains 1.0 to 4.5% by mass of Ni, 0.2 to 1.1% by mass of Si, 0.005 to 1.0% by mass of Sn, and 0.005 to 0.005% of Fe. 2 mass%, Cr 0.005-0.2 mass%, Co 0.05-2 mass%, P 0.005-0.1 mass%, Ag 0.005-0.3 mass%
  • a copper alloy containing at least one selected from the group consisting of a composition consisting of Cu and inevitable impurities, and a solution treatment is applied to the resulting ingot or a round bar obtained therefrom.
  • a copper alloy wire is obtained by wire drawing to a wire diameter of 2 mm, and a plurality of the copper alloy wires are twisted, further compressed, and then subjected to aging annealing at 350 to 550 ° C. for 1 minute to 5 hours.
  • the ingot includes billets.
  • the wire conductor for wiring of the present invention is excellent in terminal crimping strength. Moreover, the electric wire conductor for wiring according to the present invention can be prevented from hot cracking when the conductor is produced, and can be excellent in workability when the wire is drawn into a small diameter. According to the method for manufacturing a wire conductor for wiring of the present invention, a wire conductor for wiring having the above-described excellent physical properties can be manufactured.
  • the wiring wire of the present invention can reduce the weight of the conductor by reducing the diameter of the conductor, and is suitable as a wiring wire for other signal wires for automobiles and robots, and electric / electronic devices. According to the method for manufacturing a wiring wire of the present invention, a wiring wire having the above-described excellent characteristics can be manufactured.
  • a preferred embodiment of the copper (Cu) alloy wire used for the wiring conductor of the present invention will be described in detail. First, the effect of each alloy element and the range of its content will be described.
  • Nickel (Ni) and silicon (Si) improve the strength of the copper alloy by forming Ni—Si precipitates (Ni 2 Si) in the matrix by controlling the content ratio of Ni and Si, thereby strengthening the precipitation. It is an element to be contained.
  • Ni content is 1.0 to 4.5% by mass, preferably 1.2 to 4.2% by mass. If the amount of Ni is too small, the precipitation hardening amount is small and the strength is insufficient. If the amount is too large, grain boundary precipitation occurs during heat treatment, and the strength decreases.
  • the Si content is 0.2 to 1.1% by mass, preferably 0.3 to 1.0% by mass.
  • the copper alloy material used in the present invention may contain at least one of tin (Sn), iron (Fe), chromium (Cr), cobalt (Co), phosphorus (P), and silver (Ag). preferable. These elements have a similar function in terms of improving strength, and when included, at least one selected from Sn, Fe, Cr, Co, P, and Ag, The total amount is preferably 0.005 to 2% by mass, more preferably 0.01 to 1.5% by mass.
  • Sn can be dissolved in copper and the strength can be improved by distorting the lattice.
  • the preferable content range when Sn is added is 0.005 to 1.0% by mass, and more preferably 0.05 to 0.2% by mass.
  • Fe and Cr combine with Si to form an Fe—Si compound and a Cr—Si compound, thereby improving the strength.
  • Fe—Si compounds and Cr—Si compounds have low precipitation hardening ability (age hardening ability), it is not a good idea from the viewpoint of improving strength to produce more of these compounds than necessary.
  • the contents in the case of containing Fe and Cr are preferably 0.005 to 0.2% by mass, more preferably 0.03 to 0.15% by mass, respectively.
  • Co like Ni, forms a compound with Si and improves the strength. Since Co is more expensive than Ni, the wire conductor for wiring as a preferred embodiment of the present invention uses a Cu—Ni—Si-based alloy. A —Si alloy or a Cu—Ni—Co—Si alloy may be selected. Cu-Co-Si alloys tend to be slightly better in strength and conductivity than Cu-Ni-Si alloys when aged. Therefore, it is effective for applications that place importance on these.
  • the content in the case of containing Co is preferably 0.05 to 2% by mass, and more preferably 0.08 to 1.5% by mass.
  • P has the effect of increasing strength. However, if a large amount is contained, the electrical conductivity is lowered, and grain boundary precipitation is promoted to lower the strength. Therefore, the preferable content range when P is added is 0.005 to 0.1 mass%, more preferably 0.01 to 0.05 mass%. Ag improves the strength. If the Ag content is too small, the effect cannot be obtained sufficiently. If the Ag content is too large, the effect is saturated but the effect is saturated, and the cost increases. From these viewpoints, the content when Ag is contained is preferably 0.005 to 0.3% by mass, and more preferably 0.01 to 0.2% by mass.
  • Mg magnesium
  • Mn manganese
  • the Mn content is preferably 0.01 to 0.5% by mass, and more preferably 0.1 to 0.35% by mass.
  • Zn zinc
  • the Zn content is preferably 0.1 to 1.5% by mass, and more preferably 0.4 to 1.2% by mass. If the content is too small, the above effect is not obtained, and if the content is too large, the electrical conductivity may decrease.
  • the copper alloy used in the present invention is an aging precipitation type alloy.
  • the copper alloy wire can be obtained as follows. First, an ingot obtained by casting by a conventional method so as to have an alloy composition specified in the present invention, a round bar obtained from the ingot by hot extrusion, hot forging, or rough drawing wire (hereinafter referred to as these The ingot, round bar, and rough wire are also referred to as wire material), and the solution wire material is drawn to a specified diameter (wire diameter) and then subjected to aging heat treatment. Apply. In the aging heat treatment, the above-described precipitation of Ni 2 Si occurs, and the strength and conductivity are improved.
  • the aging heat treatment conditions for decreasing the Y / T ratio vary depending on the degree of wire drawing ( ⁇ ), but in the present invention, the aging heat treatment conditions are preferably maintained at 350 to 550 ° C. for 1 minute to 5 hours.
  • the preferred aging heat treatment temperature is 450 to 550 ° C.
  • the preferred aging heat treatment temperature is 380 to 500 ° C. It is.
  • the preferable aging heat treatment temperature is 400 to 500 ° C.
  • the wire drawing degree ( ⁇ ) is larger than 4 (usually from 4).
  • the preferable aging heat treatment temperature is 380 to 480 ° C.
  • this Y / T ratio is 0.70 to 0.92, preferably 0.72 to 0.90.
  • the strain is not sufficiently released, so that the conductor itself has a small work hardening at the time of crimping, and the component or manufacturing process reduces the strength after aging heat treatment.
  • the cross-sectional reduction rate of the crimp terminal is 40% or less, the strength reduction of the crimp portion becomes large.
  • the cross-sectional area reduction rate at the time of crimping is the ratio at which the cross-sectional area is reduced by caulking at the time of crimping, and the cross-sectional area of the entire conductor strand before crimping is A 0 (mm 2 ).
  • the cross-section reduction rate of the crimp terminal is preferably 40% or less, more preferably 30% or less. Also, if the cross-section reduction rate during crimping is less than 5%, the conductor portion is likely to come out from the crimped portion of the terminal, and the electrical connection that is the original purpose becomes insufficient. Is 5% or more, more preferably 10% or more.
  • the wire material may be subjected to an aging heat treatment after a wire drawing process and then a twisting process.
  • a compression process may be added after the stranded wire process and before the aging heat treatment.
  • the compression may be performed after the aging heat treatment. In that case, it is preferable that the cross-section reduction rate of the crimping is 40% or less in consideration of the cross-section reduction in the compression.
  • C C is a coefficient
  • the material of the copper alloy wire constituting the wire conductor for wiring of the present invention can be manufactured by any of manufacturing methods such as hot extrusion of billets, hot forging of ingots, or continuous casting.
  • the wire conductor for wiring of the present invention is not only suitable as a wire conductor but also suitable as a wire for wiring provided with an insulating coating.
  • olefin resins such as polyethylene and polypropylene, or polyvinyl chloride (PVC) resins are preferable.
  • PVC polyvinyl chloride
  • a flame retardant, a cross-linking agent, or the like may be added to these to improve flame retardancy, mechanical strength, or the like.
  • the number of copper alloy wires as conductor wires to be twisted and the diameter of each strand, and the layer thickness of the insulating coating layer disposed on the strands It can be determined as appropriate according to the use of the wire for wiring. For example, 7 to 100 copper alloy wires having a diameter of 0.1 to 0.4 mm can be twisted to provide an insulation coating having a thickness of 0.1 to 1.0 mm.
  • the concept of the present invention can be applied to an aging precipitation type alloy other than the Cu—Ni—Si system of the present invention.
  • an aging precipitation type alloy such as Cu—Fe or Cu—Cr may be employed.
  • Example 1 An alloy having the composition shown in Table 1 was melted in a high frequency melting furnace, and each billet was cast. Next, the billet was hot extruded at 900 ° C. and immediately quenched in water to obtain a round bar (diameter 16 mm). Next, the round bar was drawn cold to obtain a copper alloy wire having a circular cross section with a diameter of 0.14 mm. The drawing work degree ( ⁇ ) from the round bar to the drawing was 9.5 (note that the drawing work degree was the same in the following Example 2, Comparative Example, and Reference Example). Seven wires were twisted and further compressed to obtain a stranded wire having a cross-sectional area of about 0.1 mm 2 . The stranded wire was subjected to an aging heat treatment at 430 ° C. for 2 hours, and further covered with an insulator (polyethylene) to produce a wiring wire having a length of 1 km.
  • insulator polyethylene
  • Example 2 shows the results of the crimping strength when the cross-sectional reduction rate of crimping is 10, 20, 30, and 40% for inventive examples 4 and 11 in Table 1. As the cross-sectional reduction rate of crimping increases, the crimping strength decreases, but in both cases, a practically satisfactory 50N or more is obtained as the crimping strength.
  • Table 3 shows examples 4 and 11 of the present invention in Table 1, with the aging heat treatment conditions after twisting being changed as follows, with Y / T ratios of 0.93 and 0.69, and n value 0.03 and 0.18 respectively, and comparative examples in which both are outside the scope of the present invention, and reference examples when the cross-section reduction rate of crimping is 50% and 60% are shown together with the test results, respectively. It is.
  • the aging heat treatment conditions were 390 ° C. for 2 hours in Comparative Examples 1 to 4, and 500 ° C. for 2 hours in Comparative Examples 5 to 8.
  • the crimping strength that is the same as that of the present invention is obtained when the cross-section reduction rate of the crimping is 10 to 30%.
  • the decrease in absolute strength due to the decrease in area is greater than 50N.
  • the crimping strength is 50 N or more until the cross-section reduction rate of crimping is 10 or 20%, but in the case of 30 or 40%. Below 50N.
  • Reference examples 1 to 4 in which the cross-section reduction rate of the crimping is 50% and 60% are also shown, but these all have a crimping strength of less than 50N.
  • Table 4 shows conventional examples together with test results.
  • the conventional example was manufactured by the following steps. That is, the conventional examples 1 and 2 are for soft copper (tough pitch copper), and the conventional examples 3 and 4 are for alloys having the compositions shown in Table 4 by the method described in paragraph 0032 of Patent Document 1 by a continuous casting and rolling apparatus. A rough-drawn wire was manufactured at, and then drawn in the cold to obtain a strand having a diameter of 0.14 mm. Seven strands were twisted and further compressed to obtain a stranded wire having a cross-sectional area of about 0.1 mm 2 , and further covered with an insulator (polyethylene) to obtain a wiring electric wire.
  • an insulator polyethylene
  • Conventional examples 1 and 3 were obtained by annealing the stranded wire with an electric heating device, and conventional examples 2 and 4 were obtained by performing no annealing. Each characteristic was measured by the same method as [1] to [4] described above. In the conventional examples, the pressure bonding strength is less than 50N, which is not practical.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Conductive Materials (AREA)
  • Non-Insulated Conductors (AREA)
  • Insulated Conductors (AREA)

Abstract

La présente invention  concerne un conducteur de fil électrique pour câblage, comportant une pluralité de tiges de fil d’alliage de cuivre assemblées par torsion, la tige de fils d’alliage de cuivre étant constitué de : 1,0 à 4,5% en poids de Ni et 0,2 à 1,1 % en poids de Si, le reste étant Cu et des impuretés inévitables. La tige de fils d’alliage de cuivre présente un rapport de limite d’élasticité conventionnelle 0,2% sur la résistance à la traction de 0,70 à 0,92 et un indice d’écrouissage de 0,04 à 0,17. L’invention concerne également un fil électrique pour câblage, comportant une gaine isolante prévue sur le conducteur de fil électrique pour câblage.
PCT/JP2009/061049 2008-06-17 2009-06-17 Conducteur de fil électrique pour câblage, fil électrique pour câblage, et procédé de fabrication de conducteur de fil électrique pour câblage WO2009154239A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2010517949A JPWO2009154239A1 (ja) 2008-06-17 2009-06-17 配線用電線導体、配線用電線および配線用電線導体の製造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008157599 2008-06-17
JP2008-157599 2008-06-17

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WO2009154239A1 true WO2009154239A1 (fr) 2009-12-23

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012028057A (ja) * 2010-07-21 2012-02-09 Yazaki Corp 電線及び端子付電線
WO2016170992A1 (fr) * 2015-04-21 2016-10-27 株式会社オートネットワーク技術研究所 Fil en alliage de cuivre, toron en alliage de cuivre, câble électrique gainé et faisceau de câbles
CN107354342A (zh) * 2011-08-29 2017-11-17 Jx日矿日石金属株式会社 Cu‑Ni‑Si系合金及其制造方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02114404A (ja) * 1988-10-25 1990-04-26 Sumitomo Electric Ind Ltd 電気・電子機器用銅合金細線
JPH02197013A (ja) * 1989-01-26 1990-08-03 Furukawa Electric Co Ltd:The 耐屈曲性ケーブル導体
JPH0660722A (ja) * 1992-08-10 1994-03-04 Sumitomo Electric Ind Ltd 圧着接続用電線導体
WO2003076672A1 (fr) * 2002-03-12 2003-09-18 The Furukawa Electric Co., Ltd. Fil en alliage de cuivre extremement conducteur et resistant a la relaxation a l'effort
JP2007070652A (ja) * 2005-09-02 2007-03-22 Hitachi Cable Ltd 電気部品用銅合金材とその製造方法
JP2007157509A (ja) * 2005-12-05 2007-06-21 Furukawa Electric Co Ltd:The 配線用電線導体およびそれを用いた配線用電線
JP2007305566A (ja) * 2005-12-07 2007-11-22 Furukawa Electric Co Ltd:The 配線用電線導体、配線用電線、及びそれらの製造方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02114404A (ja) * 1988-10-25 1990-04-26 Sumitomo Electric Ind Ltd 電気・電子機器用銅合金細線
JPH02197013A (ja) * 1989-01-26 1990-08-03 Furukawa Electric Co Ltd:The 耐屈曲性ケーブル導体
JPH0660722A (ja) * 1992-08-10 1994-03-04 Sumitomo Electric Ind Ltd 圧着接続用電線導体
WO2003076672A1 (fr) * 2002-03-12 2003-09-18 The Furukawa Electric Co., Ltd. Fil en alliage de cuivre extremement conducteur et resistant a la relaxation a l'effort
JP2007070652A (ja) * 2005-09-02 2007-03-22 Hitachi Cable Ltd 電気部品用銅合金材とその製造方法
JP2007157509A (ja) * 2005-12-05 2007-06-21 Furukawa Electric Co Ltd:The 配線用電線導体およびそれを用いた配線用電線
JP2007305566A (ja) * 2005-12-07 2007-11-22 Furukawa Electric Co Ltd:The 配線用電線導体、配線用電線、及びそれらの製造方法

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012028057A (ja) * 2010-07-21 2012-02-09 Yazaki Corp 電線及び端子付電線
US9263165B2 (en) 2010-07-21 2016-02-16 Yazaki Corporation Electrical wire and electrical wire with terminal
US9786403B2 (en) 2010-07-21 2017-10-10 Yazaki Corporation Electrical wire and electrical wire with terminal
DE112011102402B4 (de) 2010-07-21 2020-07-30 Yazaki Corporation Draht mit Anschluss
CN107354342A (zh) * 2011-08-29 2017-11-17 Jx日矿日石金属株式会社 Cu‑Ni‑Si系合金及其制造方法
WO2016170992A1 (fr) * 2015-04-21 2016-10-27 株式会社オートネットワーク技術研究所 Fil en alliage de cuivre, toron en alliage de cuivre, câble électrique gainé et faisceau de câbles
JP2016204702A (ja) * 2015-04-21 2016-12-08 株式会社オートネットワーク技術研究所 銅合金線、銅合金撚線、被覆電線およびワイヤーハーネス
CN107532238A (zh) * 2015-04-21 2018-01-02 株式会社自动网络技术研究所 铜合金线、铜合金绞线、包覆电线和线束

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